The Sermon on the Mount

“Seeing the crowds, he went up on the mountain, and when he sat down, his disciples came to him. And he opened his mouth and taught them.” — Matthew 5:1–2

The Sermon on the Mount (Matthew 5–7) is the most sustained block of Jesus’ ethical teaching in the Gospels. Delivered from a mountainside — evoking Moses receiving the law at Sinai — the Sermon presents the character, values, and conduct of those who belong to the basileia tou Theou (βασιλεία τοῦ Θεοῦ, “kingdom of God”). Matthew’s phrase he opened his mouth (anoixas to stoma autou, ἀνοίξας τὸ στόμα αὐτοῦ) is a Semitic idiom signaling solemn, authoritative speech — this is no casual conversation but a definitive pronouncement. The Sermon has been called the magna carta of the kingdom, the constitution of Christian ethics, and the most challenging moral teaching ever given.

The Beatitudes: Character of the Kingdom Citizen

Jesus opens with eight blessings — the Makarioi (μακάριοι), “blessed” or “flourishing” — that describe the surprising character of those who belong to God’s kingdom. The word makarios (μακάριος) in classical Greek described the bliss of the gods, an inner happiness independent of circumstances. In the Septuagint it translates Hebrew ashre (אַשְׁרֵי, “happy, blessed”), the same word that opens the Psalter: “Blessed is the man” (Psalm 1:1).

• Blessed are the poor in spirit — ptochoi to pneumati (πτωχοὶ τῷ πνεύματι). The word ptochos (πτωχός) means not merely “poor” but “destitute, begging” — those who know their utter spiritual poverty and dependence on God
• Blessed are those who mourn — penthountes (πενθοῦντες), a word for deep, visceral grief, the kind associated with mourning the dead. These are those who grieve over sin and brokenness in the world
• Blessed are the meek — praeis (πραεῖς), echoing Psalm 37:11 (LXX: praeis; Hebrew: anavim, עֲנָוִים, “the humble, afflicted”). This is not weakness but strength under control — the gentle and humble, not the power-hungry
• Blessed are those who hunger and thirst for righteousness — peinontes kai dipsontes ten dikaiosunen (πεινῶντες καὶ διψῶντες τὴν δικαιοσύνην). Both verbs are in the present tense — an ongoing, never-satisfied longing for God’s dikaiosune (δικαιοσύνη, “justice, righteousness”)
• Blessed are the merciful — eleemones (ἐλεήμονες), from eleos (ἔλεος, “mercy, compassion”), the Septuagint’s translation of Hebrew chesed (חֶסֶד, “steadfast love, covenant loyalty”). Those who extend compassion rather than demanding their rights
• Blessed are the pure in heart — katharoi te kardia (καθαροὶ τῇ καρδίᾳ). Katharos (καθαρός, “clean, pure”) echoes the language of ritual purity now applied to the inner life — those whose heart (kardia, the seat of will and thought) is undivided in devotion to God
• Blessed are the peacemakers — eirenopoioi (εἰρηνοποιοί), a compound word appearing only here in the New Testament. It echoes Hebrew shalom (שָׁלוֹם), which means not merely absence of conflict but wholeness, well-being, and flourishing. These are those who actively pursue reconciliation
• Blessed are those who are persecuted for righteousness’ sake — dediogmenoi heneken dikaiosunes (δεδιωγμένοι ἕνεκεν δικαιοσύνης). The perfect participle dediogmenoi indicates an ongoing state — those who suffer for doing what is right

The Beatitudes are not entrance requirements but descriptions of the people God is forming. They overturn worldly values: the kingdom belongs not to the strong, the wealthy, and the powerful, but to the humble, the merciful, and the hungry-hearted.

”You Have Heard… But I Say”: Jesus Intensifies the Law

In a series of six antitheses (Matthew 5:21–48), Jesus uses the formula ekoúsate hoti errethē… ego de lego humin (ἠκούσατε ὅτι ἐρρέθη… ἐγὼ δὲ λέγω ὑμῖν, “You have heard that it was said… but I say to you”). The emphatic ego (“I”) is striking — in Greek, the pronoun is normally unnecessary since the verb carries the subject. Jesus is asserting personal authority over the interpretation of Torah, an authority that belongs to God alone. He takes commands from the Old Testament and reveals their deeper intention:

• Murder and anger (5:21–26) — The command against murder extends to orgizo (ὀργίζω, “to be angry”) and calling someone raka (ῥακά, from Aramaic reqa, רֵיקָא, “empty one, worthless”) or more (μωρέ, “fool”). Reconciliation — diallagēthi (διαλλάγηθι, “be reconciled”) — must precede even worship.
• Adultery and lust (5:27–30) — Faithfulness is not merely external; the lustful gaze — blepōn pros to epithumēsai (βλέπων πρὸς τὸ ἐπιθυμῆσαι, “looking in order to desire”) — is already moicheia (μοιχεία, “adultery”) of the heart.
• Divorce (5:31–32) — Jesus restricts the permissive apostasion (ἀποστάσιον, “certificate of divorce,” translating Hebrew sefer keritut, סֵפֶר כְּרִיתֻת), honoring the permanence of the marriage covenant.
• Oaths (5:33–37) — Simple truthfulness should make oaths (horkos, ὅρκος) unnecessary. “Let what you say be simply ‘Yes’ or ‘No’” — nai nai, ou ou (ναὶ ναί, οὒ οὔ).
• Retaliation (5:38–42) — Rather than demanding ophthalmon anti ophthalmou (ὀφθαλμὸν ἀντὶ ὀφθαλμοῦ, “an eye for an eye,” translating Hebrew ayin tachat ayin, עַיִן תַּחַת עַיִן), Jesus calls his followers to absorb wrong and respond with generosity.
• Love for enemies (5:43–48) — Agapate tous echthrous humōn (ἀγαπᾶτε τοὺς ἐχθροὺς ὑμῶν, “love your enemies”). The verb agapao (ἀγαπάω) denotes not affection but willed, self-giving devotion — the same love the Father shows “who makes his sun rise on the evil and on the good.”

Jesus is not contradicting Moses but revealing the law’s full depth. The righteousness (dikaiosune, δικαιοσύνη) he demands must perisseuse (περισσεύσῃ, “exceed, overflow, abound beyond”) that of the grammateis (γραμματεῖς, “scribes”) and Pharisaioi (Φαρισαῖοι, from Aramaic perishayya, פְּרִישַׁיָּא, “the separated ones”) (Matthew 5:20) — it reaches to the intentions and affections of the heart.

The Lord’s Prayer

At the center of the Sermon, Jesus teaches his disciples to pray (Matthew 6:9–13):

“Our Father in heaven, hallowed be your name. Your kingdom come, your will be done, on earth as it is in heaven. Give us this day our daily bread, and forgive us our debts, as we also have forgiven our debtors. And lead us not into temptation, but deliver us from evil.”

The address Pater hemon (Πάτερ ἡμῶν, “Our Father”) reflects the Aramaic Abba (אַבָּא), the intimate yet reverent address Jesus used for God. “Hallowed” (hagiastheto, ἁγιασθήτω) is a passive imperative — a “divine passive” asking God himself to cause his name to be treated as holy. The word epiousios (ἐπιούσιος, “daily”) in “daily bread” is one of the rarest words in Greek — found almost nowhere outside this prayer — and may mean “for the coming day” or “what is needful for existence.” Jesus uses opheilemata (ὀφειλήματα, “debts”) for sins, reflecting the Aramaic chova (חוֹבָא, “debt, obligation”) — sin conceived as a debt owed to God. The prayer moves from God’s glory to human need — from adoration to dependence to confession to protection. It is both a model for prayer and a summary of kingdom priorities.

Kingdom Ethics: A Way of Life

Throughout the Sermon, Jesus lays out the distinctive ethics of his kingdom:

• Secret righteousness — Give, pray, and fast without seeking human applause (Matthew 6:1–18)
• Freedom from anxiety — Trust the Father’s provision rather than serving wealth (Matthew 6:19–34)
• Humility in judgment — Address your own faults before correcting others (Matthew 7:1–5)
• Persistence in prayer — “Ask, and it will be given to you; seek, and you will find” (Matthew 7:7–8)
• The Golden Rule — panta hosa ean thelete hina poiosin humin hoi anthropoi, houtos kai humeis poieite autois (πάντα ὅσα ἐὰν θέλητε ἵνα ποιῶσιν ὑμῖν οἱ ἄνθρωποι, οὕτως καὶ ὑμεῖς ποιεῖτε αὐτοῖς) — “Whatever you wish that others would do to you, do also to them, for this is the Law and the Prophets” (Matthew 7:12). Rabbi Hillel had famously stated the negative form; Jesus states it positively, making love an active pursuit

The Narrow Gate and the Call to Obedience

Jesus closes the Sermon with a series of warnings that demand a response:

• Two gates — The narrow gate leads to life; the wide gate leads to destruction (Matthew 7:13–14)
• Two trees — True and false prophets are known by their fruit, not their words (Matthew 7:15–20)
• Two builders — The phronimos (φρόνιμος, “wise, prudent”) person who hears Jesus’ words and poiei (ποιεῖ, “does, practices”) them builds on petra (πέτρα, “bedrock”); the moros (μωρός, “foolish”) person who hears and does not act builds on ammos (ἄμμος, “sand”) (Matthew 7:24–27)

The Sermon does not end with “believe this” but with “do this.” The contrast is between poieo (ποιέω, “to do, practice”) and merely akouo (ἀκούω, “to hear”) — the same distinction the Hebrew shema (שְׁמַע) insists upon, where hearing and obeying are inseparable. Hearing without obedience is the sand foundation that collapses under pressure.

How Should We Read the Sermon?

Christians have debated how to interpret and apply the Sermon on the Mount. The major views include:

• The Reformed view: The Sermon reveals the full depth of God’s moral demand, which no one can perfectly keep. It drives believers to depend on Christ’s righteousness while also providing a standard for sanctification. The Sermon shows both the goal of the Christian life and the impossibility of achieving it apart from grace.

• The Anabaptist and Wesleyan view: The Sermon is meant to be obeyed — literally and practically — by the community of Jesus’ disciples. Nonviolence, enemy love, and radical generosity are not impossible ideals but the actual way of life that the Spirit empowers. The church is called to embody these commands visibly in the world.

• The Lutheran two-kingdoms view: The Sermon governs the Christian’s personal life and spiritual posture before God, but civil society operates under a different mandate. A Christian may serve as a soldier or judge while personally holding to the ethic of the Sermon in matters of the heart.

• The Eschatological view: The Sermon describes the ethic of the coming kingdom. It is fully realizable only when Christ returns, but it shapes the direction of Christian life now as believers live in anticipation of that kingdom.

Each of these readings captures something true. The Sermon is at once a revelation of God’s ultimate standard, a call to genuine obedience, and an invitation to depend on the grace of the One who alone fulfilled it perfectly. Augustine devoted an entire treatise to it (De Sermone Domini in Monte), reading the Beatitudes as a ladder of sanctification ascending from humility to peacemaking — a journey made possible only by the Spirit who writes the law on the heart.

“Be perfect, as your heavenly Father is perfect.” — Matthew 5:48